Sometimes to finish the race you have to slowdown. Expending too much energy in the beginning of the race will wear you out. Slow down pace yourself and make it to the finishline.
How many times do we push a lot of energy into serving God and burn out way to early. Small steps will suffice as you learn to grow your relationship.
Set your goals and work to achieve them, but they must be realistic. Do not start building your relationship with Him with 6 hours of prayer and 3 hours of bible read everyday. Start with something realistic and bump up from there.
Where are you burning yourself out ?